Datalist inside update panel linkbutton is not downloading f

Question

Hi,

DataList Inside update panel linkbutton is not downloading file.

Below is my code

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Panel runat="server" ID="UpdatePanel1" ChildrenAsTriggers="false">
<div style="vertical-align: middle; min-height: 480px;" class="pre-scrollable">
<div>
<asp:DataList ID="DataList2" runat="server" p Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" HorizontalAlign="Center" RepeatLayout="Table">
<ItemTemplate>
<div>
<asp:Label ID="Label2" runat="server" Text='<%# Eval("FileName") %>'></asp:Label>
<asp:LinkButton ID="LinkButton1" runat="server" Text='<%# Eval("ImagePath") %>' OnClick="DownloadFile" CommandArgument='<%# Eval("Id")%>'></asp:LinkButton>
</div>
</ItemTemplate>
</asp:DataList>
</div>
</div>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
Dim fileName as String="D:\Image\1.jpg" Response.Clear() Response.Buffer = True Response.Charset = "" Response.Cache.SetCacheability(HttpCacheability.NoCache) 'Response.ContentType = contentType Response.AppendHeader("Content-Disposition", Convert.ToString("attachment; filename=") & fileName) 'Response.BinaryWrite(bytes) Response.Flush() Response.[End]()

I try the following code but also no success

</ContentTemplate> <Triggers> <asp:PostBackTrigger ControlID="LinkButton1" /> </Triggers>